Anything above 6 mg per 1 kg, has been proven to have no added positive impact on training performance and is only detrimental to your wallet. (fitnessandpower.com)
Simply put, caffeine can become your best training partner, and not just for training performance, it can help in all areas of life. (fitnessandpower.com)
In fact, some big surprises are sometimes predicted by spring training performance. (sportsinsights.com)